What is sprint racing?

"Sprint" is used for many different types of motorsport - here we're using the karting definition:

The sprint format is a series of short-duration races, normally for a small number of laps, that qualify for a final, with a variety of point scoring calculations to determine the event's overall winner ... Here, speed and successful passing is of the most importance.

The exact format will depend on the number of drivers involved. As an example:

This is all still in early stage planning, and details may change.